US9470426B2 - In-ceiling liquid desiccant air conditioning system - Google Patents

In-ceiling liquid desiccant air conditioning system Download PDF

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Publication number
US9470426B2
US9470426B2 US14/303,397 US201414303397A US9470426B2 US 9470426 B2 US9470426 B2 US 9470426B2 US 201414303397 A US201414303397 A US 201414303397A US 9470426 B2 US9470426 B2 US 9470426B2
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Prior art keywords
liquid desiccant
conditioner
structures
air stream
desiccant
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US14/303,397
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US20140366567A1 (en
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Peter F. Vandermeulen
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Copeland LP
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7AC Technologies Inc
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Assigned to 7AC TECHNOLOGIES, INC. reassignment 7AC TECHNOLOGIES, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: VANDERMEULEN, PETER F.
Publication of US20140366567A1 publication Critical patent/US20140366567A1/en
Priority to US15/271,785 priority patent/US10619868B2/en
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Publication of US9470426B2 publication Critical patent/US9470426B2/en
Assigned to EMERSON CLIMATE TECHNOLOGIES, INC. reassignment EMERSON CLIMATE TECHNOLOGIES, INC. MERGER (SEE DOCUMENT FOR DETAILS). Assignors: 7AC TECHNOLOGIES, INC.
Assigned to COPELAND LP reassignment COPELAND LP ENTITY CONVERSION Assignors: EMERSON CLIMATE TECHNOLOGIES, INC.
Assigned to ROYAL BANK OF CANADA, AS COLLATERAL AGENT reassignment ROYAL BANK OF CANADA, AS COLLATERAL AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: COPELAND LP
Assigned to U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT reassignment U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: COPELAND LP
Assigned to WELLS FARGO BANK, NATIONAL ASSOCIATION, AS COLLATERAL AGENT reassignment WELLS FARGO BANK, NATIONAL ASSOCIATION, AS COLLATERAL AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: COPELAND LP
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • F24F3/1417—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with liquid hygroscopic desiccants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/1435—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification comprising semi-permeable membrane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/1458—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification using regenerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/14—Details or features not otherwise provided for mounted on the ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system

Definitions

  • FIG. 2 shows a detailed schematic of a ceiling mounted fan-coil unit as used in FIG. 1 .
  • FIG. 3 shows a 3-way liquid desiccant membrane module that is able to dehumidify and cool a horizontal air stream.
  • FIG. 12 illustrates the psychrometric processes typically involved with the energy recovery methods shown in the previous figures.
  • the horizontal axis shows the dry-bulb temperature (in degrees Celsius) and the vertical axis shows the humidity ratio (in g/kg).
  • Outside Air 1101 (OA) at 35C and 18 g/kg enters the system as does return air 1102 (RA) from the space, which is typically at 26C, 11 g/kg.
  • Latent energy recovery such as was shown in FIG. 8 reduces the humidity of the outside air to a lower humidity (and a somewhat lower temperature) at 1105 (OA′).
  • the return air absorbs the humidity (and some of the heat) at 1104 (RA′).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Central Air Conditioning (AREA)
  • Drying Of Gases (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Sorption Type Refrigeration Machines (AREA)
US14/303,397 2013-06-12 2014-06-12 In-ceiling liquid desiccant air conditioning system Active 2035-04-18 US9470426B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US14/303,397 US9470426B2 (en) 2013-06-12 2014-06-12 In-ceiling liquid desiccant air conditioning system
US15/271,785 US10619868B2 (en) 2013-06-12 2016-09-21 In-ceiling liquid desiccant air conditioning system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361834081P 2013-06-12 2013-06-12
US14/303,397 US9470426B2 (en) 2013-06-12 2014-06-12 In-ceiling liquid desiccant air conditioning system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/271,785 Continuation US10619868B2 (en) 2013-06-12 2016-09-21 In-ceiling liquid desiccant air conditioning system

Publications (2)

Publication Number Publication Date
US20140366567A1 US20140366567A1 (en) 2014-12-18
US9470426B2 true US9470426B2 (en) 2016-10-18

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US14/303,397 Active 2035-04-18 US9470426B2 (en) 2013-06-12 2014-06-12 In-ceiling liquid desiccant air conditioning system
US15/271,785 Active US10619868B2 (en) 2013-06-12 2016-09-21 In-ceiling liquid desiccant air conditioning system

Family Applications After (1)

Application Number Title Priority Date Filing Date
US15/271,785 Active US10619868B2 (en) 2013-06-12 2016-09-21 In-ceiling liquid desiccant air conditioning system

Country Status (8)

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US (2) US9470426B2 (ar)
EP (2) EP3008396B1 (ar)
JP (2) JP6506266B2 (ar)
KR (2) KR102302927B1 (ar)
CN (2) CN110715390B (ar)
ES (1) ES2759926T3 (ar)
SA (1) SA515370187B1 (ar)
WO (1) WO2014201281A1 (ar)

Cited By (14)

* Cited by examiner, † Cited by third party
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RU2659836C1 (ru) * 2017-06-15 2018-07-04 федеральное государственное бюджетное образовательное учреждение высшего образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВО "НИУ "МЭИ") Абсорбционно-диффузионный холодильник, работающий от теплонасосной установки
US20190113286A1 (en) * 2016-03-31 2019-04-18 Gerhard Kunze Air-conditioning via multi-phase plate heat exchanger
US10323867B2 (en) 2014-03-20 2019-06-18 7Ac Technologies, Inc. Rooftop liquid desiccant systems and methods
US10443868B2 (en) 2012-06-11 2019-10-15 7Ac Technologies, Inc. Methods and systems for turbulent, corrosion resistant heat exchangers
US10619868B2 (en) 2013-06-12 2020-04-14 7Ac Technologies, Inc. In-ceiling liquid desiccant air conditioning system
US10619867B2 (en) 2013-03-14 2020-04-14 7Ac Technologies, Inc. Methods and systems for mini-split liquid desiccant air conditioning
US10731876B2 (en) 2014-11-21 2020-08-04 7Ac Technologies, Inc. Methods and systems for mini-split liquid desiccant air conditioning
US10753624B2 (en) 2010-05-25 2020-08-25 7Ac Technologies, Inc. Desiccant air conditioning methods and systems using evaporative chiller
US10760830B2 (en) 2013-03-01 2020-09-01 7Ac Technologies, Inc. Desiccant air conditioning methods and systems
US10921001B2 (en) 2017-11-01 2021-02-16 7Ac Technologies, Inc. Methods and apparatus for uniform distribution of liquid desiccant in membrane modules in liquid desiccant air-conditioning systems
US10941948B2 (en) 2017-11-01 2021-03-09 7Ac Technologies, Inc. Tank system for liquid desiccant air conditioning system
US11022330B2 (en) 2018-05-18 2021-06-01 Emerson Climate Technologies, Inc. Three-way heat exchangers for liquid desiccant air-conditioning systems and methods of manufacture
US11333412B2 (en) 2019-03-07 2022-05-17 Emerson Climate Technologies, Inc. Climate-control system with absorption chiller
US11385000B2 (en) 2020-09-25 2022-07-12 Emerson Climate Technologies, Inc. Systems and methods for a non-pressurized closed loop water sub-system

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WO2014089164A1 (en) 2012-12-04 2014-06-12 7Ac Technologies, Inc. Methods and systems for cooling buildings with large heat loads using desiccant chillers
WO2014152888A1 (en) 2013-03-14 2014-09-25 7 Ac Technologies, Inc. Methods and systems for liquid desiccant air conditioning system retrofit
TWI637129B (zh) * 2015-07-07 2018-10-01 創昇科技股份有限公司 濕度調控系統
EP3408008A1 (en) 2016-01-28 2018-12-05 Carrier Corporation Moisture separation system
KR102532471B1 (ko) 2016-02-17 2023-05-12 엘지전자 주식회사 세탁물 처리장치 및 그 운전방법
US11473791B2 (en) * 2017-01-26 2022-10-18 Daikin Industries, Ltd Humidification device
IT202000016996A1 (it) 2020-07-13 2022-01-13 Torino Politecnico Scambiatore di calore e massa realizzato con un biocomposto idrogel di alginato-bentonite per catturare vapore acqueo, e relativo processo di produzione
CN115164282B (zh) * 2022-08-08 2023-06-23 西南科技大学 一种真空膜除湿暖通空调系统及运行控制方法

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